The Hunter Thoroughbred Breeders Association has slammed the state government's proposed changes to planning laws.

The government's draft regulations would see the Planning Assessment Commission prioritise a mining project's economic impact.

Association president Cameron Collins says the policy is a betrayal of regional communities and makes it difficult to trust the way mining companies pitch their projects.

"Mining companies routinely overstate the economic benefits and ignore the costs and impacts on other industries when they're doing assessments of projects and its not the government that assesses the benefits of a project, it's the mining companies themselves," he said.

"And if we can't rely on what they're producing then how can we get a fair system."

Dr Collins says the changes go against Government promises that the industry would be protected.

"We're stunned by this whole process," he said.

"We're stunned by the lack of consultation with regard to these changes, we're stunned by the content where mining is basically given priority and is the principal consideration.

"And we're stunned that this SEPP flies in the face of all assurances given since the government was elected, that we are part of a critical industry and we would be protected."

You have no doubt been hearing a lot about the Paris Agreement and know that it pertains to climate change, but are too embarrassed at this stage to ask for an overall explanation of what it's all about.